52411 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the 52411 model number is decoded

Listed in SKF 17000 chapter 5, 52411 is an ISO 104 double-direction thrust ball bearing, 45 mm bore and 120 mm OD on a flat housing seat, standing 87 mm high before installation. Construction is a five-component stack: one central shaft washer with tracks on both faces, two outward-facing housing washers and two cage sets, which lets one housing recess accept thrust from either direction. note the bore of 52411 is 45 mm by the dimension table: the double-direction series was deliberately aligned to the 51/53 washer sets with shifted codes, so the familiar 04=20 arithmetic does not apply here. no cage suffix means the standard stamped steel retainer — a pressed sheet-metal ball-cage assembly that covers the bulk of the thrust-ball assortment. Envelope 45×120×87 mm (1.772×4.724×3.425 in), 37.5 mm radial section, C 195 kN, C0 400 kN, Pu 14.6 kN. reference speed 1,300 r/min (thermal) and limiting speed 1,800 r/min (mechanical), catalogue mass 4700 g. Speed-ratio note for this exact unit: the reference speed is 1,300 r/min against a 1,800 r/min limiting speed, a reference-to-limit ratio of 0.72. Bore-to-OD planning: OD 120 over bore 45 is a 2.67× step for this size, and the 87 mm height gives a bore/height ratio of 0.52; use these ratios when the housing recess around the 45 mm shaft is the first constraint. Stack/annulus proportions: the 87 mm axial stack over the 9,719 mm² washer annulus gives 8.95 mm of height per annular square millimetre ×10⁻³, and at 4700 g the bearing holds about 85.1 kN of C0 per kilogram. Section proportions: the 37.5 mm radial section compares with 45 mm of bore (section/bore ≈ 0.83) and the 87 mm height is 2.32× that section — the proportions that identify the 52400 envelope at a glance. Speed band width for this size is 500 r/min between reference and limiting (1.38× ratio); lubrication, preload and heat removal decide where inside that band 52411 can actually run. Double-direction order-number note: the unit is built around one central shaft washer with a ground bore and tracks on both faces, flanked by two housing washers and two independent ball-cage assemblies; observe the assembly orientation (the two housing washers face outwards) and note that a 52-series unit replaces a mirrored pair of 51-series bearings only after the stack height and seat drawings are re-checked. At 45 mm bore and 87 mm overall height the unit drops into one recess where a mirrored single-direction pair would need two seats; both loose 120 mm housing washers must remain free to slide during thermal movement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The central shaft washer takes the interference fit on the 45 mm shaft while both outer housing washers run loose in their registers; both loose washers need positive axial retention on vertical shafts.
• Where shaft and housing cannot be kept square, the sphered 54-series execution of the same bore with two U seat washers is the self-aligning counterpart; the flat 52400 unit has no alignment capacity.
• Each direction independently needs the minimum axial load (factor A 0.79): the side that is momentarily unloaded during slow reversal skids first, so arrange preload or symmetry rather than assuming the loaded side drives the idle side.
• Service both cage sets together: replacing only the noisy side while leaving the worn 400 kN opposite track in place reproduces the failure within weeks — inspect both shaft-washer faces and both loose washers at removal.
• The 195/400 kN figures belong to 52411 specifically (the double flat pressed steel execution of 52411); suffixed, sphered and counterpart-series order numbers are separate articles, so write the complete designation on the order and the maintenance record.